This reality series mixes first hand testimony with realistic dramatic re-enactments to recreate paranormal experiences that defy explanation. The show takes viewers beyond as encounters with poltergeists and extraterrestrials are revisited in this fascinating chronicle of the unknown.

A female spirit which manifests without any clothes provides a clue into the fate of a woman and her son who went missing while driving in Southern California. Then, the story of a police helicopter which may have come into contact with an alien spacecraft in Kentucky in 1993 is told.

When a young girl in Baltimore starts talking to an imaginary friend named Emily, her parents are unconcerned. But as time goes by, the rest of the family discover that the entity going by the name Emily is real, and has evil intentions towards them. Later, a mother and a daughter try to unravel the mystery surrounding a girl they meet in Florida.